in addition, the several centers doing the global temperature computations have developed their own network selections, based also on the existing
weather observing stations.
The left - hand panel of Figure 1 (below) illustrates the observed trends over the period 1900 — 2012 for
weather observing stations in the contiguous United States located west of longitude 116 ° W — this includes all of Washington and Oregon, most of California, and parts of Idaho and Nevada.
The figure shows the change in observing times at U.S.
weather observing stations using two different methodologies, both of which indicate a shift from afternoon observing times to morning which impart a bias in the data, a bias which needs to be removed.
Temperatures throughout Oklahoma were scorchingly hot on Wednesday and Thursday, with a top reading of 115 °F noted on the state's network of
weather observing stations, known as the Oklahoma Mesonet.
Even if NOAA did not have
weather observing stations across the length and breadth of the United States the impacts of the warming are unmistakable.
Using updated and corrected temperature observations taken at thousands of
weather observing stations over land and as many commercial ships and buoys at sea, the researchers show that temperatures in the 21st century did not plateau, as thought.
Not exact matches
The collection of larger than usual amounts of Arctic winter
weather data in 2015 was due to two reasons: the Norwegian research vessel Lance was in the Arctic Ocean
observing and collecting upper atmosphere meteorological data, and the frequency of observation and data collection was increased at some of the land - based observation
stations around the Arctic.
It would have been instructive to superimpose an appropriately colored dot at the location of each long - term occupied
weather station representing the
observed trend (in Figure 3) rather than just the two values included in 3a and 3b.
Figure 3: The ratio of record daily temperature highs to record daily lows
observed at about 1,800
weather stations in the 48 contiguous United States from January 1950 through September 2009.
Locations of the
observing stations are shown on an interactive map of the province which enables a user to zoom and pan to a region of interest, learn about the
stations that are located in the region, filter the displayed
stations based on observation date,
weather element,
observing agency, region and more.
These indices are also calculated from
weather station observations recorded at 22 locations within southwestern British Columbia, Canada, to evaluate the performance of both the 10 - km and 800 - m datasets in replicating the
observed quantities.
Evidence for changes in the climate system abounds, from the top of the atmosphere to the depths of the oceans (Figure 2.1).1 Scientists and engineers from around the world have compiled this evidence using satellites,
weather balloons, thermometers at surface
stations, and many other types of
observing systems that monitor the Earth's
weather and climate.
In the discussion of the Tucson
weather station, Ben Herman of the U of Arizona
observed that there were serious biases with the HO - 83 hygrothermometer — introduced in the early 1990s — which was said to be a contributor to the uptick to Tucson values.
In summary, given the Bureau is taking one - second extrema, rather than following its own published guidelines (Instruments and
Observing Methods Report No. 65, WMO / TD No. 862) recordings taken by the Bureau over the last twenty years from automatic
weather stations across Australia may not be fit for purpose.
Here are just two of the
weather stations I've
observed... http://forums.castanet.net/viewtopic.php?f=27&t=33069&p=1301028#p1059079
The resolution of an astute and dedicated observer would be around + / -1 F. Therefore the total error margin of all
observed weather station temperatures would be a minimum of + / -2.5 F, or + / -1.30 c...
Since 1912, a
weather station there has
observed an overall cooling trend.
3 / looking at individual
weather stations, one can also
observe significant and questionable adjustment evolutions: Few examples of how to hide the inconvenient truth that temperature have been warmer in the past, despite small anthropogenic signature:
Station Data: Reykjavik (64.1 N, 21.9 W)-- Old adjustments: the 30's are clearly warmer than current period.